Jamb Physics 1999 Past Questions and Answers

Question 46:

• JAMB 1999

The diagram above shows the prism arrangement in a

A. Binocular
B. Spectrometer
C. Periscope
D. Projector

Question 47:

• JAMB 1999

The diagram above shows a magnet X with its south pole moved along a soft - iron bar PQ in the direction shown. After some time, the poles at P and Q respectively are

A. North - North
B. North - South
C. South - North
D. South - South

Question 48:

• JAMB 1999

In the circuit above, the ammeter reads a current of 5.0 A when R = 8Ω and reads 7.0A when R = 5Ω. The value of the unknown resistance X is

A. 10.0Ω
B. 7.5Ω
C. 5.0Ω
D. 2.5Ω

Question 49:

• JAMB 1999

In the circuit above, The potential across each capacitor is 100V. The total energy stored in the two capacitors is

A. 3.0 x 10⁴J
B. 3.0 x 10²J
C. 2.5 x 10^-2J
D. 6.0 x 10^-3J

Question 50:

• JAMB 1999

In the diagram above, if the internal resistance of the cell is zero, the ration of the powers P₁ and P₂ dissipated by R₁ and R₂

A. ^R₂/_R[sub]1[/sub]
B. ^R₁/_R[sub]2[/sub]
C. ^R₁+R₂/_R[sub]1[/sub]
D. ^R₁+R₂/_R[sub]2[/sub]